A framework for building native applications using React

Godot Engine – Multi-platform 2D and 3D game engine

Dear ImGui: Bloat-free Graphical User interface for C++ with minimal dependencies

Industry-standard navigation-mesh toolset for games

3D engine with modern graphics

Interactive field-aligned mesh generator

The Forge Cross-Platform Rendering Framework PC Windows, Steamdeck (native), Ray Tracing, macOS / iOS, Android, XBOX, PS4, PS5, Switch, Quest 2

Lightweight and modular C++11 graphics middleware for games and data visualization

Simple MPL-2.0-licensed C++ geometry processing library.

OpenToonz - An open-source full-featured 2D animation creation software

Game engine

Open-source, cross-platform, C++ game engine for creating 2D/3D games.

3D C++ Game Engine - yet another open source game engine

The Atomic Game Engine is a multi-platform 2D and 3D engine with a consistent API in C++, C#, JavaScript, and TypeScript

edb is a cross-platform AArch32/x86/x86-64 debugger.

Polycode is a cross-platform framework for creative code.

Amazon Lumberyard is a free AAA game engine deeply integrated with AWS and Twitch – with full source.

Unreal Engine 5 plugin component for rendering runtime generated content.

Houdini Engine Plugin for Unreal Engine.

An open-source Tomb Raider 1-5 engine remake

Environment Plugin Project (Ocean Simulation, Sky Simulation, Buoyancy, Time, Fish plugins for Unreal Engine 4)

Cross-Platform High Performance 2D/3D game engine for people like me who like to write code.

A sample app that demonstrates several techniques for rendering real-time shadow maps

DirectX 12 and Vulkan libraries that provide convenient access to realistically rendered and simulated hair and fur

Light probe generation and BRDF authoring for physically based shading.

Auto-layout Ui library, lightweight, skinnable and system agnostic, with an OpenGL backend

Nazara Engine is a cross-platform framework aimed at (but not limited to) real-time applications requiring audio, 2D and 3D real-time rendering, network and more.

Experimental vector graphics and 2D animation editor

Small footprint UI library for hardware accelerated games & applications

A cross-platform game engine with cutting-edge real-time rendering tech & fantastic speed.